Hi, This October I'll open my physics undergraduate studies :D ♥♥♥ And as you all know, first things first - mechanics. I realize that it includes dealing with simple differential equations and that the accompanying mathematical explanations are not totally satisfactory. Therefore, I intend to purchase a little pre-self-experience. Nothing crazy, a little practice. Can you give me a hand by pointing the relevant families of DE I'll ran into? Thank you all.